Dynamic simulation of a pressure regulating and shut-off valve

Saha, Binod Kumar; Chattopadhyay, Himadri; Mandal, Pradipta Basu; Gangopadhyay, Tapas

doi:10.1016/j.compfluid.2014.06.011

Cited by 63 publications

(31 citation statements)

References 12 publications

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“…Although a direct CFD method is usually used in research, Wu in [16] proposed an innovative indirect CFD method to simulate the flow-pressure characteristics of a pressure spool valve for the automotive fuel supply system. Saha et al in [17] presented the methodology and results of flow process dynamic modelling inside spool-type valves by means of CFD methods.…”

Section: Introductionmentioning

confidence: 99%

CFD analysis of the characteristics of a proportional flow control valve with an innovative opening shape

Lisowski

Filo

2016

Energy Conversion and Management

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Section: Introductionmentioning

confidence: 99%

CFD analysis of the characteristics of a proportional flow control valve with an innovative opening shape

Lisowski

Filo

2016

Energy Conversion and Management

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“…Comparison with experimental results showed an agreement and both of them confirmed the linear flow rate characteristic of the valve. Saha et al (2014) investigated flow characteristics inside a pressure regulating and shut-off valve (PRSOV) by means of CFD (Ansys Fluent) and 2D modeling. The working fluid in their research was air as a compressible domain.…”

Section: Introductionmentioning

confidence: 99%

Double-Container Gas Fuel Control Valve: Numerical Analysis and Operating Conditions

Zirak¹,

Seifi²,

Ramesh³

2020

JAFM

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Flow behavior through a gas turbine double-container fuel valve is numerically studied. Normally the gas fuel supply pressure of the gas turbine sites is over 20+ barg while the combustion chamber pressure is around 12 barg in base load operation and slightly more than atmospheric during start-up. Therefore, the flow control through this high range of pressure ratios is a very difficult and costly task with a single-container control valve. The double-container valve is an innovative design which consists of two parts, SRV (Stop Ratio Valve) followed by GCV (Gas Control Valve), in a compact unit. SRV maintains a significantly low pressure upstream of the GCV during gas turbine firing to establish flame and control fuel flow during acceleration. It opens the GCV to a position where it is much easier to control the flow through the valve. The same situation exists in base load operation when the turbine load is changing. The obtained results prove the special design of the valve to maintain linear characteristics of flow with stroke position in GCV. The results of the mass flow are given for various GCV stroke openings at various valve pressure ratios. Also, the range of pressure ratios for a proper operation of GCV is determined. SRV regulates the middle pressure between the two parts based on rotor speed. Therefore, a sensitive combination of globes position takes place during gas turbine operation.

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“…2,3 Especially for some valves that involve extraordinary dimension or structure, it is difficult to measure their flow coefficients experimentally. [4][5][6] Furthermore, experimental method can only provide limited data at several preset locations, and the interaction between valve structure and flow characteristics is still unrevealed, 4,7,8 so it is difficult to optimize a valve design according to experimental results.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, CFD simulation can be an effective alternative to experimental method to evaluate the performance of valves, and a lot of attempts had been made with the help of different software. [2][3][4][5][6][7][8][9][10][11][12] For example, Huang and Kim 10 investigated the flow characteristics of a butterfly valve at different valve disk angles with a uniform incoming velocity using FLUENT. Vescovo and Lippolis 9 also used FLUENT to analyze the flow forces acting on spools of hydraulic directional control valves and compared the accuracies resulted from twodimensional (2D) and three-dimensional (3D) models.…”

Section: Introductionmentioning

confidence: 99%

A simple method for high-precision evaluation of valve flow coefficient by computational fluid dynamics simulation

Zhou

Wang

Yi-fang³

2017

Advances in Mechanical Engineering

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Flow coefficient is an important performance index associated with the energy efficiency of a valve, and an effective method to evaluate valve flow coefficient is necessary for valve industry. However, theoretical estimation often results in poor accuracy, while experimental measurements involve significant costs in time and equipment. In this article, a computational fluid dynamics method is proposed to achieve simple and accurate evaluation of valve flow coefficient. For each valve, a computational fluid dynamics model is established containing a valve section, an upstream section, and a downstream section. A grid-adaptation strategy is then applied to improve the accuracy of simulation. To calculate flow coefficient, the most important issue is to determine the net pressure loss induced by valve (DP v). Herein, the overall pressure drop (DP o) is obtained first, and the pipe-induced pressure drop (DP p) is estimated by linear fitting. Then, DP v is calculated as the difference between DP o and DP p. To ensure accurate estimation of the pressure losses, a length of 26 times of pipe diameter is preferred for the upstream section. The experiments demonstrated that the presented method can accurately predict flow coefficient for various types of valves and thus has great potential to be widely used in the valve industry.

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Dynamic simulation of a pressure regulating and shut-off valve

Cited by 63 publications

References 12 publications

CFD analysis of the characteristics of a proportional flow control valve with an innovative opening shape

CFD analysis of the characteristics of a proportional flow control valve with an innovative opening shape

Double-Container Gas Fuel Control Valve: Numerical Analysis and Operating Conditions

A simple method for high-precision evaluation of valve flow coefficient by computational fluid dynamics simulation

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